Brush grain-cleaner



(No Model.)

L. GATHMANN.

BRUSH GRAIN CLEANER. No. 250,481.7. Patented 1360.6,1881

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ing parts.

Unirse STATES PATENT Ormea.

LOUIS GA'IHMANN, OF CHICAGO, ILLINOIS.

BRUSH GRAIN-CLEANER.

SPECIFICATION forming part of Letters Patent No. 250,437, dated December6, 1881. `Application iiled April 19, 1881. (No model.) i

To all whom it may concern Be it known that I, LOUIS GATHMANN, ofChicago, State of Illinois, have invented certain new and usefulImprovements. in Brush Grain-Cleaners, and I do hereby declare that thefollowing is a'full, clear, and exact description thereof, referencebeing had to the accompanying' drawings, and to the letters of refcrencemarked thereon, which form a part of this specification.

The improvements herein described relate to features of construction andoperation in disk-brush grain-cleaners, said improvements havingreference to the control of the grain in its passage outward between theworkin g-faces.

The invention consists in the several novel matters hereinafter setforth and claimed.

Figure l is acentral vertical section of a double-brush grain-cleanerhaving a horizontal axis and containing my improvements, the sectionbeing taken through the axis of the mov- Fig. 2 is a face view of one ofthe brushes shown in Fig. 1,showing both the corrugations and shortfurrows in its face. Fig, 3 is a face view of a brush, the furrows ofwhich are produced by win gs of a central dispersing-plate; and Fig. 4is an axialsection of the brush shown in Fig. 3. A is a stationarydislibrush, fixed to the hOuSingHof the machine, and having the centra]aperture, K, leading from the feed-chute or hopper J.

B is a rotating brush, arranged to oppose its face to that of the brushA, and mounted ou the shaft C, driven by the pulley P. The brushes areadjustable toward or from each other' by any suitable device for givinglongitudinal movement to the shaft C. The remaining parts of the machinebeing familiar need not be specially described.

The novel features of construction here presented in the brushes are asfollows: First, the faces of said brushes are corrugated in circlesconcentric with the common axis of their relative motion, and thecircular proininences of one brush are arranged opposite thecorresponding depressions in the other. In brushes of working size theseprominences and depressions may be, say, halt' an inch in height ordepth, and the central line of one elevation may be, say, three inchesfrom that of the next.

or both of the brushes A and B, said furrows opening from the eye orcenter of the brush and terminating inside the periphery'. The effect ofsuch fu'rrows is to admit the grain freely between the brushes, whichare otherwise too close together to allow the grain to enter betweenthem. As they do not extend to the periphery, the discharge of the grainwill not be effected by said furrows, but is dependent, as it should be,upon the facial form or the nearness or pressure of the brushesthemselves. The furrows shown in Fig. 2 are indicated as being formed bycutting off the ends of the bristles.- In Figs. 3 and 4 I have shown theshort passages or furrows ff as being produced by the wings zo fw of thedispersing or feed plate W, which wings extend outward beyond thecentral bosom of the disk and enter the body of the bristles, forcingthem apart. Said wings lie a short distance below the face of the brush,as clearly seen in Fig. 4, and thereby leave a space above them for theadmission of the grain. The wings w w, applied to the runner, areotherwise intended for their usual purpose of throwing the grain outwardbetween the working-faces of the machine.

While I have above described my improve-l ments in connection with adouble-brush graincleaner, it is evident that they may be employed in asingle brush opposed to any suitable face-as, for example, one ofwire-netting or perforated metal. In that case, it' the corrugated formof brush he used the opposing metal face should preferably becorrespondin gly corrugated.

It is, of course, immaterial whether the disks be mounted on ahorizontal or a vertical axis, and in the use of the corrugations in thebrushface it is plain that they may be angular instead of rounded, asshown, without departure from my invention.

IOO

I admit that two rigid disks have been provided with opposite sharply-anguiar rid ges and grooves in place of the rounded corrugations of thebrushes described; but such disks could not be run near enough togetherto bear upon the grain, as contempla-ted in the use of the brushes,without grinding the grain; and, if separated far enough to avoidgrinding, the grain would simply be thrown from one rigid disk-surfaceto the other. In that case, moreover, the grain is retarded at theangles of the corrugations,where, in the rounded brush-surfaces, it isaccelerated, so that in no respect is the effect ot' such form of rigidplates like that described of the brushes, having mutually interttin g,rounded, annular corrugations, borne yieldin gly against each other orupon the grain, as set forth.

I claim as my invention- 1. The combination, in a disk-brushgraincleaner, of a disk-brush and an opposing face,

' to separate the bristles, as shown,forming passages directed outwardfrom the bosom of the disk and terminating inside the periphery,substantially as described, and for the purposes set forth.

In testimony that I claim the foregoing as my invention I aflix mysignature in presence ot' two witnesses.

LGUIS GATHMANN.

Witnesses:

M. E. DAYTON, JESSE Cox, Jr.

